Method for the production of a pat-



Feb. 21, 1956 H. w. J. HELLEBREKERS 2,735,452

METHOD FOR THE PRODUCTION OF A PATTERNED DOUBLE WOVEN FILE FABRIC HAVINGFLOATING FILE THREADS Filed Sept. 29, 1953 METHOD FOR THE PRODUCTION OFA PAT- TERNED DOUBLE WOVEN PILE FABRIC HAVING FLOATING PILE THREADSHenricus Wilhelmus Josephus Hellebrekers, Gorssel, Netherlands, assignorto Koninklijke Vereenigde Tapijtfahrieken N. V., Deventer, Netherlands,a Dutch company The present invention relates to an improved method forthe production of a patterned double woven pile fabric having pile tuftsbound in on each weft thread and comprising floating pile threads, whichafter the cutting of the finished double pile fabric, are drawn out ofits fabric components.

In hitherto known methods for producing pile fabrics of this kind it hasbeen the practice to lay at the lines or zones of transition in thepattern, i. e. where the pile threads of different colour and/or naturealternate with one another, the floating threads of the two kinds ofpile threads, on the same side of the double fabric.

This however, is objectional, in so far when drawing out the floatingends of the pile threads at such zones, each time pile tufts are removedfrom one of the two fabric components only, resulting in the occurrenceof so called transition faults.

The invention has for its object to provide an improved method for theproduction of a double pile fabric of the kind referred to, whereby theoccurrence of such faults is prevented, such object being attained inthat at the transitional zones, the pile threads of the kind used up tothe moment such transitional zone is reacted and the pile threads nextto be worked, are passed out of the weave, respectively are introducedtherein on opposite sides of the double-fabric.

At the lines of transition, the pile threads are thus doubled, that isto say pile threads of different colour and/or nature lie directly onebeside the other so that upon drawing out the floating portions of thepile threads, there will always remain the pile tufts of one kind ofpile threads, so that none of the two components obtained by cutting thedouble pile fabric, will present such transition faults and bothcomponents will therefore be completely identical.

The invention will be further elucidated with reference to theaccompanying drawings, in which Fig. 1 shows the weave of a patterneddouble pile fabric when carrying into effect the method hitherto known.

Fig. 2 is a similar view of such weave when practising the novel methodaccording to the present invention.

Fig. 3 shows a further example of such novel method.

In these figures the pile threads of one kind in each case arerepresented by dotted lines, whilst those of an other colour and/ ornature are shown in full lines.

Referring to Figure 1, in a double woven pile fabric made according tothe known method, the floating portions 1 and 2 respectively of the pilethreads 3 and 4 respectively are always located at the same side of thetwin system; at the zones of transition the pile threads 3 of the kindmomentary worked, are always passed out of the lower weave at the pointwhere the pile threads next to be used, are introduced in such weave.

It will be apparent that when in that case, after the cutting of thefinished twin fabric along the line xx, the not bound in floatingportions of the pile threads are States Patent 2,735,452 Patented Feb.21, 1956 drawn out, pile tufts are removed from the lower component ofthe twin fabric, causing therein open spaces, the so-called transitionfaults.

Now referring to the twin pile fabric shown in the Figures 2 and 3 andproduced in accordance with the novel method constituting the presentinvention, it appears, that therein the pile threads of different kinds,at the transitional zones, are passed out of the Weave respectively areintroduced therein. on opposite sides of the twin system in such amanner, that each time, at the transitional zones, two series of pilethreads-of different colour and/ or nature-together run through thesystem in exactly the same way, resulting therein, that whensubsequently the floating portions of the pile threads are drawn out,the pile tufts formed by one of such series only disappear, whilst thoseof the other series remain in place. This therefore avoids the formationof faults of the kind indicated.

Fig. 3 differs from Fig. 2 in that it represents a fabric woven with tWospools, i. e. wherein each time two weft threads are woven in at thesame time and each of such Weft threads binds a pile thread, so thatalways two similar pile threads are simultaneously bound in one eitherside of the twin system. In this manner not only transition faults areavoided, as also in Fig. 2, but as far as the location of the pile tuftsis concerned, one also attains a complete symmetry of the two fabriccomponents. Moreover it will be understood, that this, when comparedwith the fabrics shown in Fig. l or 2, results in a double output andthat both fabrics will be provided with selvages.

What I claim is:

1. A metehod of weaving a patterned pile fabric in double clothcomprising the steps of weaving two foundation cloths each made up ofsuccessive wefts and warps interwoven therewith, interweaving pile warpsof a first kind with intermittent groups of the wefts in both of thefoundation cloths so that the floating portions of said pile warps ofthe first kind extending over the wefts between said intermittent groupsare all disposed at the outside of one of said foundation cloths,simultaneously interweaving pile warps of a second kind with said weftsbetween the intermittent groups so that the floating portions of saidpile warps of the second kind extending over said intermittent groups ofwefts are all disposed at the outside of the other of said foundationcloths and with said pile warps of the first and second kinds conjointlyextending between the foundation cloths at the first and last wefts ofsaid intermittent groups, cutting through said pile warps 0f the firstand second kinds to separate the double cloth, and drawing out all thefloating portions of said pile warps of the first and second kinds.

2. A method of weaving a patterned pile fabric in double clothcomprising the steps of interweaving two sets of foundation warps withrelated foundation wefts to form two foundation cloths, interweavingpile warps of a first kind with spaced apart groups of said wefts of thetwo foundation cloths, interweaving pile warps of a second kind with thewefts between said groups, the portions of said pile warps between thewefts with which the latter are interwoven floating at the outside ofthe double cloth, said pile warps of the first kind being extended intoand out of the double cloth at the same transition defining wefts wheresaid pile warps of the second kind respectively extend out of and intothe double cloth and at opposite sides of the latter so that said pilewarps of the first and second kinds cojointly extend between the twofoundation cloths at the transitions between the two kinds of pilewarps, cutting the pile warps between the two foundation cloths,

3 v and drawing out all of the floating portions of said pile warps.

3. A woven pattern pile fabric in double cloth comprising two sets offoundation warps interwoven with related wefts to define two foundationcloths, a first kind of pile warps interwoven with spaced apart groupsof said wefts in both foundation cloths, theportions of said first kindof pile warps between said groups of wefts floating at the outside ofthe double cloth, a second kind of pile warps interwoven with the weftsin both foundation cloths between said spaced apart groups and havingthe portions thereof floating at the outside of the double cloth in theregions of said groups, said pile warps of the first kind extending intoand out of the double cloth at the same wefts where said pile warps 15of the second kind extend out of and into, respectively,

the double cloth and at opposite sides of the latter so that said firstand seconds kinds of pile warps extend cojointly throughthe double clothat said same wefts defining the transitions between the elements of thefabric pattern whereby, when said pile warps are cut to divide thedouble cloth into two portions, said floating portions can be drawn outwithout resulting in faults at said transitions between the elements ofthe fabric pattern.

References Cited in the file of this patent FOREIGN PATENTS 5,260 GreatBritain of 1894 19,763 Great Britain of 1911 847,425 France July 3, 1939

3. A WOVEN PATTERN PILE FABRIC IN DOUBLE CLOTH COMPRISING TWO SETS OFFOUNDATION WARPS INTERWOVEN WITH RELATED WEFTS TO DEFINE TWO FOUNDATIONCLOTHS, A FIRST KIND OF PILE WARPS INTERWOVEN WITH SPACED APART GROUPSOF SAID WEFTS IN BOTH FOUNDATION CLOTHS, THE PORTIONS OF SAID FIRST KINGOF PILE WARPS BETWEEN SAID GROUPS OF WEFTS FLOATING AT THE OUTSIDE OFTHE DOUBLE CLOTH, A SECOND KIND OF PILE WARPS INTERWOVEN WITH THE WEFTSIN BOTH FOUNDATION CLOTHS BETWEEN SAID SPACED APART GROUPS AND HAVINGTHE PORTIONS THEREOF FLOATING AT THE OUTSIDE OF THE DOUBLE CLOTH IN THEREGIONS OF SAID GROUPS, SAID PILE WARPS OF THE FIRST KIND EXTENDING INTOAND OUT OF THE DOUBLE CLOTH AT THE SAME WEFTS WHERE SAID PILE WARPS OFTHE SECOND KIND EXTEND OUT OF AN D INTO, RESPECTIVELY, THE DOUBLE CLOTHAND AT OPPOSITE SIDES OF THE LATTER SO THAT SAID FIRST AND SECONDS KINDSOF PILE WARPS EXTEND COJOINTLY THROUGH THE DOUBLE CLOTH AT SAID SAMEWEFTS DEFINING THE TRANSITIONS BETWEEN THE ELEMENTS OF THE FABRICPATTERN WHEREBY, WHEN SAID PILE WARPS ARE CUT TO DIVIDE THE DOUBLE CLOTHINTO TWO PORTIONS, SAID FLOATING PORTIONS CAN BE DRAWN OUT WITHOUTRESULTING IN FAULTS AT SAID TRANSITIONS BETWEEN THE ELEMENTS OF THEFABRIC PATTERN.